Spiral centrifugal fan and air treatment device

Abstract

The invention provides a spiral centrifugal fan. A centrifugal wind wheel of the centrifugal fan is located at the center position of a centrifugal wind wheel shell. One or more spiral air flues are arranged on the inner wall of the centrifugal wind wheel shell. The spiral air flues are located on the periphery of the centrifugal wind wheel, and air inlets of the spiral air flues are located in the radial outer side of the centrifugal wind wheel. Blades of the centrifugal wind wheel incline relative to the rotating axis of the centrifugal wind wheel. Air exhausted by the centrifugal wind wheel is forwards guided spirally through the spiral air flues. The spiral centrifugal fan has the beneficial effects of an axial flow fan and the beneficial effects of a centrifugal fan, axial air discharging can be achieved, and the beneficial effect of the high wind pressure of the centrifugal fan is achieved as well. Meanwhile, the noise of the spiral centrifugal fan is lower than that of the centrifugal fan, the size of the spiral centrifugal fan is smaller than that of the centrifugal fan, and the spiral centrifugal fan is noiseless, high in wind pressure, small in size and large in wind volume. The spiral centrifugal fan can serve as a ventilator, the spiral centrifugal fan can also serve as an air purifier when provided with a purification module, the spiral centrifugal fan can serve as a fan heater when provided with an electric heating module, and the spiral centrifugal fan can serve as a fresh air fan due to the parallel design. The wind direction is the axial direction, and after wind pipe connecting pieces are arranged, an inner wind pipeline and an outer wind pipeline are connected very conveniently.

Description

technical field [0001] The invention relates to the field of fans and air treatment equipment, in particular to a spiral centrifugal fan. Background technique [0002] Common fans include axial fans and centrifugal fans. Axial flow fans have a simple structure, large air volume but low wind pressure, and the inlet and outlet wind directions are all axial, so it is difficult to apply to designs such as air purifiers that require high wind pressure; the wind pressure of centrifugal fans is higher than that of axial flow fans. After the volute is commonly configured, the volume is larger under the same air volume, and the difference between the air inlet and outlet air directions is 90 degrees, the noise is also relatively large, and the structure is relatively complicated. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a spiral centrifugal fan, which has large air volume and air pressure, small volume and simple ...

AI Technical Summary

Problems solved by technology

The structure of the axial flow fan is simple, the air volume is large but the wind pressure is low, and the wind direction of the inlet and outlet is axial, so it is difficult to apply to the design of air purifiers that require high wind pressure; the wind pressure of the centrifugal fan is hig

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